/*
 * Copyright (c) 2003-2010, Live Media Pty. Ltd.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted
 * provided that the following conditions are met:
 *
 *  1. Redistributions of source code must retain the above copyright notice, this list of
 *     conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright notice, this list of
 *     conditions and the following disclaimer in the documentation and/or other materials
 *     provided with the distribution.
 *  3. Neither the name of Live Media nor the names of its contributors may be used to endorse
 *     or promote products derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package com.argot.contiki;

import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;

/**
 * Simple UDP echo client.  Useful for testing connectivity to a host.
 * 
 * @author davidryan
 *
 */
public class EchoClient
{
	public static final int BUFFER_SIZE = 1024;
	public static int CLIENT_PORT = 61617;

	public static void runTheServer(String host, int hostPort) 
	throws Exception 
	{
		DatagramSocket ds = new DatagramSocket(CLIENT_PORT);
		byte buffer[] = new byte[BUFFER_SIZE];

		int pos=0;
		while (true) 
		{
			int c = System.in.read();
			switch (c) 
			{
			case -1:
				System.out.println("Server Quits.");
				return;
			case '\r':
				break;
			case '\n':
				if (buffer[0] == 'x')
				{
					return;
				}
				System.out.println("Sending Message:" + new String(buffer, 0, pos) );
				ds.send(new DatagramPacket(buffer,pos,InetAddress.getByName(host),hostPort));
				pos=0;
				break;
			default:
				buffer[pos++] = (byte) c;
			}
		}
	}
	
	
	public static void main(String[] args)
	{
		try
		{
			runTheServer("192.168.42.2", 50000);
		} 
		catch (Exception e)
		{
			e.printStackTrace();
		}
	}
}
